The alias isn't referenced anywhere, so remove it in preparation of
adding a chipset devicetree using the same alias in a subsequent patch.
TEST=build google/dedede (dexi)
Change-Id: I0745eab9b0947b790f64383549e205bd906ba555
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90896
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>